diff --git a/tests/unit/test_model.py b/tests/unit/test_model.py
index 5c69566b14..0ab00c3c2e 100644
--- a/tests/unit/test_model.py
+++ b/tests/unit/test_model.py
@@ -17,7 +17,7 @@
 import subprocess
 
 import sagemaker
-from sagemaker.model import FrameworkModel, ModelPackage
+from sagemaker.model import FrameworkModel, Model, ModelPackage
 from sagemaker.predictor import RealTimePredictor
 
 import pytest
@@ -417,37 +417,100 @@ def test_model_enable_network_isolation(sagemaker_session):
     assert model.enable_network_isolation() is False
 
 
-@patch("sagemaker.model.Model._create_sagemaker_model", Mock())
-def test_model_create_transformer(sagemaker_session):
-    sagemaker_session.sagemaker_client.describe_model_package = Mock(
-        return_value=DESCRIBE_MODEL_PACKAGE_RESPONSE
-    )
+@patch("sagemaker.model.Model._create_sagemaker_model")
+def test_model_create_transformer(create_sagemaker_model, sagemaker_session):
+    model_name = "auto-generated-model"
+    model = Model(MODEL_DATA, MODEL_IMAGE, name=model_name, sagemaker_session=sagemaker_session)
+
+    instance_type = "ml.m4.xlarge"
+    transformer = model.transformer(instance_count=1, instance_type=instance_type)
+
+    create_sagemaker_model.assert_called_with(instance_type, tags=None)
+
+    assert isinstance(transformer, sagemaker.transformer.Transformer)
+    assert transformer.model_name == model_name
+    assert transformer.instance_type == instance_type
+    assert transformer.instance_count == 1
+    assert transformer.sagemaker_session == sagemaker_session
+    assert transformer.base_transform_job_name == model_name
+
+    assert transformer.strategy is None
+    assert transformer.env is None
+    assert transformer.output_path is None
+    assert transformer.output_kms_key is None
+    assert transformer.accept is None
+    assert transformer.assemble_with is None
+    assert transformer.volume_kms_key is None
+    assert transformer.max_concurrent_transforms is None
+    assert transformer.max_payload is None
+    assert transformer.tags is None
+
+
+@patch("sagemaker.model.Model._create_sagemaker_model")
+def test_model_create_transformer_optional_params(create_sagemaker_model, sagemaker_session):
+    model = Model(MODEL_DATA, MODEL_IMAGE, sagemaker_session=sagemaker_session)
 
-    tags = [{"Key": "k", "Value": "v"}]
-    model = DummyFrameworkModel(sagemaker_session=sagemaker_session)
     instance_type = "ml.m4.xlarge"
-    model.name = "auto-generated-model"
+    strategy = "MultiRecord"
+    assemble_with = "Line"
+    output_path = "s3://bucket/path"
+    kms_key = "key"
+    accept = "text/csv"
+    env = {"test": True}
+    max_concurrent_transforms = 1
+    max_payload = 6
+    tags = [{"Key": "k", "Value": "v"}]
+
     transformer = model.transformer(
-        instance_count=1, instance_type=instance_type, env={"test": True}, tags=tags
+        instance_count=1,
+        instance_type=instance_type,
+        strategy=strategy,
+        assemble_with=assemble_with,
+        output_path=output_path,
+        output_kms_key=kms_key,
+        accept=accept,
+        env=env,
+        max_concurrent_transforms=max_concurrent_transforms,
+        max_payload=max_payload,
+        tags=tags,
+        volume_kms_key=kms_key,
     )
+
+    create_sagemaker_model.assert_called_with(instance_type, tags=tags)
+
     assert isinstance(transformer, sagemaker.transformer.Transformer)
-    assert transformer.model_name == "auto-generated-model"
-    assert transformer.instance_type == "ml.m4.xlarge"
-    assert transformer.env == {"test": True}
+    assert transformer.strategy == strategy
+    assert transformer.assemble_with == assemble_with
+    assert transformer.output_path == output_path
+    assert transformer.output_kms_key == kms_key
+    assert transformer.accept == accept
+    assert transformer.max_concurrent_transforms == max_concurrent_transforms
+    assert transformer.max_payload == max_payload
+    assert transformer.env == env
+    assert transformer.tags == tags
+    assert transformer.volume_kms_key == kms_key
+
+
+@patch("sagemaker.model.Model._create_sagemaker_model")
+def test_model_create_transformer_network_isolation(create_sagemaker_model, sagemaker_session):
+    model = Model(
+        MODEL_DATA, MODEL_IMAGE, sagemaker_session=sagemaker_session, enable_network_isolation=True
+    )
 
-    sagemaker.model.Model._create_sagemaker_model.assert_called_with(instance_type, tags=tags)
+    transformer = model.transformer(1, "ml.m4.xlarge", env={"should_be": "overwritten"})
+    assert transformer.env is None
 
 
 @patch("sagemaker.session.Session")
 @patch("sagemaker.local.LocalSession")
 @patch("sagemaker.fw_utils.tar_and_upload_dir", MagicMock())
 def test_transformer_creates_correct_session(local_session, session):
-    model = DummyFrameworkModel(sagemaker_session=None)
+    model = Model(MODEL_DATA, MODEL_IMAGE, sagemaker_session=None)
     transformer = model.transformer(instance_count=1, instance_type="local")
     assert model.sagemaker_session == local_session.return_value
     assert transformer.sagemaker_session == local_session.return_value
 
-    model = DummyFrameworkModel(sagemaker_session=None)
+    model = Model(MODEL_DATA, MODEL_IMAGE, sagemaker_session=None)
     transformer = model.transformer(instance_count=1, instance_type="ml.m5.xlarge")
     assert model.sagemaker_session == session.return_value
     assert transformer.sagemaker_session == session.return_value